This forum isn't for discussing trades. Instead it is for posting finalized agreements as a matter of record that you can then link back to from your profile page. Positive trade experiences others have with you will help to improve your trust level. For trade discussions use the General trade forum, or the site messaging system. Both parties that have agreed to a trade should post a new thread using the following template:

User name of both traders

Trade agreement (what's being traded, the condition, etc…)

Any one of the two participating in the trade can start the thread. The other trade partner should reply to concur the trade and the trade agreement. Once the trade is completed and both parties have received their cards, then they should both post a final followup with their review of how well the trade went. Both members can reference the thread as a link on their profile page to develop an ongoing trade history.